I had my doubts about this product when I bought it, but it worked great and enhanced my surface book even more. The app kit and guide (namely the video) really works and I've used it twice successfully with no dust or bubbles. I bought it primarily in the hope of being able to do without the glove when painting. At first I was disappointed as it still felt too tacky, but after a few days of normal touchscreen use I found it to be a lot less tacky and now I can actually draw without a glove. It is worth noting that the protector gives a different feeling when drawing, but it is not uncomfortable. In short, it sticks less to the hand and sticks more firmly to the pen than ordinary glass. There is a bit of what I can only describe as added "haze" or "noise", presumably due to the matte texture, but I only notice this if I accidentally bring my face too close to the screen while painting ( helped stave off this harmful habit, haha). It doesn't affect the black balance as much as I thought, in fact it wasn't even noticeable after the first few hours. It reduces glare - after so many years of using glass screens I thought glare didn't bother me, but I have to admit that not having to look at me while writing is very nice. I get headaches very easily, so I was anticipating potential problems, but the headaches, eyestrain, etc. didn't get any worse.
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